Évent de Brun

A large gallery leads to Un puits d’environ 7 mètres. At the bottom is the large lake. At the other end of the lake, a joint allows one to climb. One then progresses through the lower part of the large gallery, usually flooded, then through a gallery that is vast but of irregular cross-sections. Sump 1 is superb. At its exit, a 50 mètres ledge overlooks Un lac that occupies the entire floor of the gallery in a joint. Shortly after, one reaches the puits des Perles, a 60 mètres chimney.

A 15 mètres climb leads to the decorated network of the Réseau du Bernard l’Hermite.

A first lake is bypassed on the right. At the bottom, one reaches the large lake. Depending on whether sump 1 is full or empty, one follows two large ledges or the black pipe. One crosses numerous pipes, vestiges of former pumping. Sump 1 is equipped with Un fil d’Ariane en câble inox. At its low point, a via cordata (15 mètres ledge) on the left (RD) allows one to avoid getting wet. At the exit of S1, a 50 mètres ledge overlooks Un lac that occupies the entire floor of the gallery in a joint.

A first lake is bypassed on the right (ledge and bars). A large gallery leads to Un puits d’environ 7 mètres which is descended on the right (RG). An RD rigging can also be used, rather for the ascent, to save time if there are many of you. At the bottom, one reaches the large lake; Un canoë is left permanently with Un système de cordelette de rappel très ingénieux. At the other end of the lake, one must climb into a joint: either ascend a rope for 15 mètres then take a ledge, or ascend the joint in opposition with the rope as belay; one arrives at the same place. Just after, two options: follow two large ledges (if sump 1 is full) or follow the black pipe (if sump 1 is empty). A 2 mètres step is equipped with a knotted rope. One then passes a 3 mètres climb, then 5 mètres, then 7 mètres, to arrive at sump 1. At the exit of S1, one must ascend a 15 mètres climb. There follow a 4 mètres climb and Un puits de 3 mètres. At the puits des Perles, two possibilities: ascend a 15 mètres climb towards the Réseau du Bernard l’Hermite or continue towards the bottom in the direction of sump 2.